Numb3rs star Navi Rawat has been tapped for a guest-starring role on ABC’s Castle, TVGuide.com has learned exclusively.

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Rawat will trade in her math textbooks to play Rachel Walters, a mummification expert who crosses paths with Beckett (Stana Katic) and Castle (Nathan Fillion) when the Natural History Museum’s assistant curator, Will Medina, is found murdered. Rachel informs the team that Will might have been cursed because he disturbed ancient Mayan tombs to create the museum’s newest exhibit…

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• 24
• The O.C.
• Nathan Fillion
• NUMB3RS
• Navi Rawat
• Stana Katic
• Castle

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